peatükist
Peatükist is the elative singular form of the Estonian noun peatükk, meaning “chapter.” It denotes origin or extraction from within a chapter and is used when referring to material that comes from a specific chapter of a text, such as a book or article.
In Estonian grammar, nouns decline across cases, and peatükist is the elative form used to express movement
Peatükist is not a separate lexical item beyond its inflected form; it is the elative case form
See also peatükk, the base noun meaning chapter, and related grammatical terms for Estonian noun declension.